I've tried using a dial-in number a few times, and the latency was horrible - made it really hard to jump in and say things without interrupting others.
Not sure if it was just the crappy connection, or if that is a product of using the cell network.
Agreed, between latency and terrible quality I always hate when people dial in to Zoom/Teams. It always sounds like the person is talking through a sweater from the moon.
What makes it worse for me is they never seem to notice, and if you tell them they immediately go "oh, is that better?" and then they stop talking. How are we supposed to know if it's better...?
Not clear why that would be the case. I used to dial in to BlueJeans from a landline all the time and it was fine.
Don't have a lot of cell experience though. The one time I did it for an extended period was because my power/Internet had an extended outage. It didn't work well but it was actually better than using an app on my phone; my cell reception absent WiFi assist is pretty bad at home.
Or mostly just use a dial-in number and do without video. Doesn't help if a presentation is being given and hasn't been shared in advance of course.